
def create_write_file():
    filename = input("请输入文件名：")
    text = input("请输入要写入的内容：")
    file = open(filename, "w")
    file.write(text)
    print(f"文件{filename}创建并写入成功!")

def read_file():
    filename = input("请输入要读取的文件名：")
    try:
        file = open(filename, "r")
        text = file.read()
        print(f"文件内容为：{text}")
    except FileNotFoundError:
        print(f"文件{filename}未找到")

def append_to_file():
    filename = input("请输入文件名：")
    text = input("请输入要追加的内容：")
    file = open(filename, "a")
    file.write(text)
    print(f"{text}已追加到文件{filename}")

def mynotebook():
    while True:
        print("简单记事本程序/Bug")
        print("1.创建并写入文件")
        print("2.读取文件")
        print("3.追加文本文件")
        print("4.退出！")

        choice = input("请输入选项编号：")
        if choice == "1":
            create_write_file()
        elif choice == "2":
            read_file()
        elif choice == "3":
            append_to_file()
        elif choice == "4":
            break

if __name__ == "__main__":
    mynotebook()